Needle-motion for pile-fabric looms.



No. 837,019. IATENTED NOV. 27, 1906. E. A. WHITMORE.' NEEDLE MOTION POB. PILE FABRIC LOOMS.

APPLICATION FILED JAN. 4, 1905.

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PATENTED NOV. 2"?, 1906.

F. A. WHITMORE. NEEDLE MOTION POR PILE FABRIC LOOMS.

APPLICATION FILED JAN. 4l 1905.

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FRED A. NVHITMORE, OF PHILADELPHIA, PENNSYLVANIA, ,ASSIGNOR IO CROMPTON & KNOWLES LOOM WORKS, A CORPORATION `OF 'MASS-A- UHUSETTS.

NEEDLE-MOTION FOR PILE-FABRIC LOONIS.

Specification of Letters Patent.

'Patented Nov. 27, `1906.

Application filed January 4, 1905. Serial No. 239.588.

To if/ZZ wwm/ it may concern:

Be it known that I, FRED A. WHITMORE, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful- Improvements in Needle- Motions for Pile-Fabric Looms, of which the following is a specification.

My invention relates to a needle-motion for pile-fabric looms, and particularly to the class of needle-motions shown and described in United States Letters Patent No. 740,903, in which the needle which carries the weft or filling thread is inserted and withdrawn from one side of the loom. In this class of needle-motions it is very desirable that the needle carrying the weft or filling thread should be inserted and withdrawn very rapidly and with a quick movement, so as to allow the loom to run at considerable speed and produce more of the fabric. It is also desirable to have the needle-motion or the mechanism for operating` the needle of simple construction and with few parts and to have the needle-lever operated directly from some driven part of the loom.

The object of my improvements is to provide an improved needle-motion of the class referred to of simple construction and operation.

In my improvements I use a driven rotary cam having an irregular cam-surface of the desired conformation on its periphery. The axis of rotation of said cam is at right angles 4 to the fulcrum of the swinging needle-lever,

and said cam is preferably adjustably connected with a driven gear and located close to the loom side or frame.

The fulcrumed or swinging needle-lever is directly connected with the operating-cam through a connector and a cam-lever, so that the motion of said cam is communicated directly to said needle-lever and through a connector to the needle-carriage and needle, thus obtaining a very accurate and positive movement of the needle.

I have only shown in the drawings a detached portion of a loom-frame and a needlemotion embodying my improvements combined therewith suflicient to enable those skilled in the art to understand the construction. and operation of the same.

Referring' to the drawings, Figure 1 =is:a sectional front view of the needle-motion embodying my `improvements looking in the direction of arrow a, Fig. 2. Fig. "2 `is an end view of the parts shown in Fig. 1 looking in the direction of arrow b, same figure; and Fig. 3 shows the opposite side of the cam-levers shown in Fig. 1 detached.

In the accompanying drawings, 1 is a portion of the loom side or frame.

.2 is a stand bolted to the loom side or frame.

3 is the needle-rail bracket or stand, secured in this instance to the stand 2 and having secured at its upper end a needle-rail 3 for the needle-carriage 4, to which is secured the outer end of the needle 5. The inner end of the needle 5, which inserts the weft or filling thread in the ordinary way, is in this instance supported on a needle-guide roll 6.

7 is a driven gear operated from some driven part of a loom on a shaft 8, mounted in suitable bearings. The operating-cam 9 of the needle-motion is preferably adjustably secured to the outer face of the gear 7 through slots 9 in said cam and bolt-s 10. (See Fig. 2.) The cam 9 has in this instance an annular flangev or projection 9a on its periphery forming the cam-surface, and said cam is preferably located close to the loomframe 1.

The needle is caused to be inserted and withdrawn from the shed by the rotation of the cam 9 through direct connections intermediate the cam and the fulcrumed needlelever, which connections are preferably constructed and arranged as shown in the drawmgs.

A link or connector 11 pivotally connects the needle-carriage Awith the needle-lever 12. The needle-lever 12 at its lower end is in this instance secured to the arm or shoe 13, fulcrumed on a stud 1&1. The shoe 13 has an elongated slot 13 therein, in which is adjustably secured a stud 15 on the connector 16, which has in this instance a buckle 16. The other end of the connector 16 is pivotally connected to the lower end of the driving-cam lever 17, which in this instance is fulcrumed on a stud 18 and carries aroll 17', (see Fig. 3,) which travels on one edge or side of the cam- ICO vers mounted to swing in parallel planes, one of said levers comprising two spring-connected parts or members each provided With a truck or roll held in yielding engagement with a side of the said Cam-flange by the spring connections, said parts or members being also joined by a positive but adjustable oonnector which limits their yielding movements Jfrom eaoh other, and the other of said levers being connected with said needle-carriage.

FRED A. WHITMORE. Witnesses:

l/V. B. PHELPs, i RoBT. G. FOSTER. 

